Python - U6 - I2C - Honeywell HAFUHT0300L4AXT

I am currently trying to communicate with the Honeywell HAFUHT0300L4AXT over I2C. Datasheet can be found here:
https://www.mouser.com/datasheet/2/187/honeywell-sensing-zephyr-digital-...

My wiring is as follows:
Pin1(NC) - NC
Pin2(SCL) - FIO6
Pin3(VDD) - VS
Pin4(GND) - GND
Pin5(SDA) - FIO7
Pin6(NC) - NC

There are no pullup resistors in circuit (do I need some? VS is 5V).

My code is as follows:

def main():
    """Demo"""
    while True:
        response = d.i2c(
            Address=0x49,
            I2CBytes=[0x01],
            NumI2CBytesToReceive=2,
            SCLPinNum=6,
            SDAPinNum=7,
        )
        print(response)
        bytes = response['I2CBytes']
        hex_form = [hex(x) for x in bytes]

        # it is now time to convert the response into a more readable number
        print(hex_form)
        time.sleep(1)

My output is as follows:

{'AckArray': [0, 0, 0, 0]}
{'AckArray': [0, 0, 0, 0]}
{'AckArray': [2, 0, 0, 0], 'I2CBytes': [255, 127]}
['0xff', '0x7f']
{'AckArray': [2, 0, 0, 0], 'I2CBytes': [255, 127]}
['0xff', '0x7f']
{'AckArray': [2, 0, 0, 0], 'I2CBytes': [255, 255]}
['0xff', '0xff']
{'AckArray': [2, 0, 0, 0], 'I2CBytes': [255, 255]}
['0xff', '0xff']
{'AckArray': [2, 0, 0, 0], 'I2CBytes': [255, 127]}
['0xff', '0x7f']

Ack array value of 2 does not match up to bytes sent of 1 based on documentation here:
https://labjack.com/support/datasheets/u6/low-level-function-reference/i2c

n = 1
(2^(n+1))-1 = 3

What am I doing wrong? Is it a pullup resistor, or something in the code?